Adjustable observation-stop.



y E. P. BULLARD, a.

ADJUSTABLE OBSBRVATON STOP APP'LIOATION FILED JULY 17, 1912.

Pateued Mar. 3, MEM,

P. ABULLARD, JR. MJUS''ABLE- OBSERVATION STOP.

MPMOATIUN FILED JULYN, 1912,

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Pante Mar. 34, 1914.

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Specification of Letezs Paieni. @genug-@iii phy@ To gag yq o pplication i'lcd July l', i312. Serial No. l'.

To all ywhom zi may concern Be i known than@ l, EDWARD P. Boulimie, Jin, a citizen of the United States, anal resi dent of Blidgepoig, in the county of Fair-l field and Stale of Connecticut, have invented certain. new and useful Improvements in Adjustable Observationtops, o Whieh the Yl'ollowing is a specification.

This invention relates to an improved ei'in of adjustable observation stop, iWhereley lie cutting tools of, machine tools Amay he set for certain opeations, with relation to the work carrying table A The particular' objects of the invention are to provide ineans foiu quiekly and conveniently setting the point of the cutting tool .et \"ven location for certain operations upon lar pieces of .voih; to povide ineens i eieiiy hoth he verical und l'loiizontal Ysillon of the tool may be readily (leiterin neil and set io begin Work upon successive und siniilai' pieces of work at a given point v'iijhout the necessity using gages er' other iusliuinens, and finally to provide means "whereby the cutting tool may he (lili'erenly set, :loi different; ents, foi' the various epera Yions, upon similar pieces of work.

ln the operation oi boring mills, vetical lui'l'et lathes and like i'naehine vtools, it is usually the case that such machines will be` working i'ei' a time, perhaps several Clays upon one particular pai-"t or piece olc Work, as 'for instance, pulleys, gear blanks or the like. Each annular cut upon this class of woik is Llene by n gradual feeflingfof the mol veiically, horizontally, or perhaps both vertically and horizontally until the Woik is reduced lo the pi-opei' dimension, and.v then n flifiei'ent, perhaps a i'inishingtool, is Y l foi a second opei'alion, Which, like the iist om), further reduces the casting' to a. given size, whereupon a, ihiinl anfl fourth liool may also Hoeve to ileterinine the length and (lepl'l'i. of' .swine operations, as 'for instance lhe drilling ol a hole, and whereby all the castings which are successively Anil separately turned er drilled, may be meile exactly alike,

As lie'lfore Sintes, the Cutting' tools, ,es lihe drawings, are susceptible of Jated both vertically and horizonmh, through the auornaiiic meehaf in he machine, are made to Woi'kin n with veach other so as to move the olive cutting,r tools angularly to produce jin inciining or nevel oz'e, l provide lewe seis e iyhieh ai'e conne-cloni w n e nnfehaniszhs ier the iespeelive niovenien'.' of th eols so ha such inoveinens when pifiiclne Sv each of the tools may not. oiiilv oe (leliei also whereby ille angulaiimover' hy the tivo eoi'nhineil may ii deeiniined. l'luy number ol oppln poi. may be indii-aed for lhe saiil uieveincnts will later be explaineil, accom nunihei required foi? the variou and distinct; epe 'ations which the ne the fiable may require,

'Upon the aceompanyi'ig heivinw ini;l a part el this speci lmilion siinilm l aciers of iefeiei euill :l'olinl nale like oi' coil.

")oinlingg onu line several l "i incl lfigure l, shows a pei' impl-eveil type of if. as ie niaiui'lacuifeel by ine, fom* sels of oliseivaiiani s'o coni-anne with my inveniionl is enlzigeil fleznheil iizfon; view i; l end portion of the parle shown' in Fig. l, i laiged Cross see'ional sacliile, slizlf.. auf! ope laken on line L--i oif l. disconnected end view of il: 1i

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the right of l., lling. 5, L enlarged si bolli a siclo ele=4 view, pei" y woken away, `gears and winnececl a (lua jusa i l'i'asie` as is also shown in shows plan and `ing` in ilelail io ihniaiked upon lille i ilie iiniiuf nieal l'iuniugg table theieo l2 anfl l iinili.-ifale veriifjal the frame und upon which :i adjustably inoui'ilzecl and nilaplea in o tically operated ce raise ano, low' 15 iuounteil upon rail. jiuslably moun'ed in a" head l'( in tuen moon the slide in a way lo second saddle 18 is mounted in vertical Ways 19 and is adapted to be raised and lowered so as to raise and lower the slide 20 and tool head 21 carried by the said saddle. This side head mechanism in a sense, is entirely separate from the turret head mechanism 17, and is designed to perfo "in peripheral cuts upon the Work carried by the table., While the upper 'or turret head provides for the drilling of holes, and the taking of inside annular cuts upon the Work. Both of these tool heads are provided with mechanism for imparting thereto both vertical and horizontal movements which mechanisms while separate and distinct, yet may if desired,

be set to Work in harmony with each other 23 on the said saddle 15 so that as the shaft is rotated lthe saddle Will be moved backward or forward. Movement is imparted to the ieed shaft 22 through a Worm gear 2li that is operated by a Worm driven by rear connections (not shown) With the main drive'ot the machine. The mechanism tor imparting a. vertical movement to the tool 25, tool head 17 and the slide 1G includes a shaft 26 driven by a worm gear 27 that carries a Worm 2@ splined to slide uponsaid shaft and engaged to be moved longitudinally thereon by a housing 29 connected with the saddle 15. This Worm 28 meshes with and drives a Worm gear 30 keyed to a short shaft 31 journaled in the said saddle. A pinion 32 is formed on the outer end portion of this shaft and is in engagement with a rack S3 formed in the vertically disposed head whereby the slide and its turret head are made to move vertically by the operation of the mechanism just den scribed,

The separate sets of observation stops for each of t he said mechanisms, for moving the head in the two directions are more or lessy the indicating means for the vertical 'movel ment of the head and tool= The other set otl Referring more particularly to Figs. 2 5 and 6, it Will be noted that the observation stop mechanism consists in a disk 35 secures. to the side of the hubBG on which the before mentioned Worm gear 27 is frictionally mounted. The hub and disk are thus made tast to turn the shaft While the gear may be forced to turn independently upon the hub. The disk includes an annular llanged portion 'having an inner and outer groove BS and 39 formed therein for the attachment of the specially shaped adjustable sheet metal spring clips L10 as is clearly shown in Fig. G. The peripheral surface of this disk is graduated to fractions of an inch, and the said clips d() are set with reterence thereto. rlhere may oe many of these clips attached to Vthe disk there are ditl'erent tools in the turret head so that each clip when set indicates the stopping point for that particular tool of 'the head, A. iied pointer 41 is secured to the rail and projects outward across the oi the gear. 27 so as to properly register and aline with the adjustable clips 40 secured 'to the dial-1 and thus obviously serve as the fixed point with which the adjustable stops li() oi= the rotary disks are intended to register and be These stopsoic the disk are soecially set for different kinds of Work and would obviously be similarly set and used for simiar cuts or operations upon like jobs. 1iirvom the foregoing it will be seen that if one oi' the adjustable clips 20 be set at the zero point of the graduations on the periphery of the disk. it would mean that said point Was brought to register with the lined finger ell, the saddle and tool would be operating in a certain plane with relation to the table. The advantage ot this device is that theA clips i0 can' be more readily seen than the lines or numbersgot the graduations and its location on the disk may be readily changed for the various and diiterent kinds of Work. Said clips are made to form an open loop with inturned portions to engage the groove of the disk so that they may be detachably connected, thus making it possible to use any desired number and likewise detach and lremove from the disk` any which are not needed to indicate a stopping point.

Having thus described my invention what I claim and desire to secure by Letters ljatent is 1. The combination with a cross rail, a movable tool head mounted thereon and means for moving the same including a feed shaft, ot a ,disk mounted upon the shaft and havingan annular groove, -a series of stops adjustably mounted in the groove oi the disln and a fixed pointer with W'iich either of the said stops may be made to regcombination with a graduated disk c class described and having annular grooves on opposite sides of its peripheral Signed at Bridgeport in the lCounty of portion, of a sheet metal stop shaped to con- Fairfield and State of Connecticut, June form t0 the surface of the disk and pro- A. D.,1912.

vided with ends to yieldubly engage the said y EDWARD P. BULLARD, JR. vgrooves in :ly way to frictio'nally and de- VVitnesSes:

tachubly engage the peripheral portion of MAY L. CLELAND,

the Said disk.

G. N. MOREHOUSE. 

